Method and apparatus for impregnating paper tubes or other porous articles



N. MARSHALL 1,711,643

METHOD AND APPARATUS FOR IMPREGNATING PAPER TUBES OR OTHER POROUS ARTICLES May 7, 1929.

Filed Feb. 26, 1924 2 Sheet-Sheet M y 1929- N. MARSHALL 1,711,643

METHOD AND APPKRATUS FOR IMPREGNATING PAPER TUBES OR OTHER POROUS ARTICLES Filed Feb. 25, 1924 2 Sheets-Sheet 2 Patented May 7, 1929.

UNITED STATES IIPATENT OFFICE.

NORMAN MARSHALL, OF IEI'ASH'I'IA, NEW HAMPSHIRE, ASSIGNOR TO -REMINGTON ARMS CQ'MPANY, INC., A CORPORATION OF DELAWARE.

KETEOD. APPARATUS FOR IMPREGNATING PAPER TUBES OR OTHER POROUS ARTICLES. A

Application filed February 26, 1924. Serial No. 695,248.

The invention relates to a method and apparatus for impregnating paper tubes or other porous articles with wax, sulphur, gums or other impregnating substances to make them stilt or waterproof, to increase their the closed. space above the liquid and the surplus liquid allowed to drain oif while the articles remain in the hot atmosphere" within the closed space above the liquid. After the draining is partially completed, the container is inverted in order that an "even draining of the articles maybe secured. After the draining is completed the container is removed from the tank and afresh lot of articles to be treated placed therein. I

The invention is illustrated in the accompanying drawings in which Figure 1 is a plan View of the tank for containing the impregnating liquid; Fig. 2 is a side elevation of the tank and container, a part of the tank being broken away,- Fi 3 is a side elevationof the container an its supporting mechanism; F i 4 is an end view looking toward the right in Fig. 3; Fig. 5 is a planview of one of the woven wire plates which form the top and bottom of the container; and Figs. 6 to Bare detail views of the devices for connecting the container with its supporting chain belts. The apparatus shown comprises a tank 2 for containing a hot bath of impregnating liquid and a porous container 4 for the articles to be treated. The container is'in the form of a sheet metal basket provided with a reticulated top and bottom allowing the free passage of the impregnating liquid. It is supported from a vertically movable shaft 6 by link belts or chains 8 which'pass over sprocket wheels 10 on the ends of the shaft and sprocket wheels 12 connected with the ends of the container. The supporting shaft is connected by chains 14 with any suitable hoisting mechanism by which the operator may raise and'low'er the shaft to remove the container from the tank or to introduce it into and raise and lower it withi in the tank. The tank is provided with hinged covers 16 which may be swung back as'indicated in dotted lines in Fig. 2 to permit the introduction and removal of the container and the covers are slotted as indicated at 18 to embrace the chains 8 when the covrs are closed, as indicated in Fig. 1.

The reticulated top and bottom of the container consist of sheets ofwire cloth 20 bound. with stiffening rings 22, as indicated-in Fig. 5. These reticulated plates fit within the side and end walls of the container and are held therein by cross rods 24, the ends of which are screw-threaded to receive finger nuts 26 which may be readily removed to permit the withdrawal of the rods when either reticulated plate is to be removed for the introduction or removal of the articles which are being treated.

The sprocket wheels 12 through which the container is connected with the chains 8 are detachably connected with the ends of the container so that containers may be readily disconnected fromthe chains for transportation and removal of the treated articles and may be readily reconnected with the chains after a fresh lot of articles has been placed therein. For this purpose, the sprocket wheels are secured u on studs 28 projecting from rectangular b ocks 30 and the ends of the container are provided with rectangular sockets 32 for embracing the blocks. The sockets are flanged to overlie the outer face of the blocks and the blocks are held within the sockets by pins 34 which may be readily inserted or removed.

The articles to be treated are placed within the receptacleupon the reticulated bottom and then the reticulated top is placed over them and the cross rods 24 secured in place. The container, if not already connected with the chains 8, is then connected therewith by slidingthe blocks 30 into the sockets 32 and in srting the pins 34. The container is then lowered into the hot impregnatin liquid Within the tank 2 and the covers 16 c osed, as indicated in full lines in Figs. '1 and 2. The liquid in the tank but partially fills the tank so that a closed chamber is formed above the liquid which is of suflicient height to permit the receptacle to be inverted within the chamber without dipping into the liquid. After the articles have remained within the liquid the requisite length of time, the receptacle is raised into the'closed chamber above the liquid where a hot atmosphere is maintained during the draining of the receptacle. After the receptacle has been partially drained, the shaft 6 is turned through 180 degrees by means of the crank 36, thus inverting the receptacle and securing an even draining of the articles therein. After the draining is completed, the covers 16 are swung back and the container removed from the tank. It maythen be readily disconnected from the chains 8 and another container filled with articles to be treated may be uickly connected with the chains and lower into the tank.

While it is'preferred to employ the apparatus substantlally as shown and described in practicing the invention, it will be understood that the specific construction of this apparatus is not essential and may be varied or modified without departing from the invention.

What is claimed is:

1. An apparatus for impregnating papertubes or other porous articles comprising a tank, a cover for closing the top of the tank, a porous container for the articles to be treated, means for immersing the container in an impregnatin liquid in the bottom of the tank and for li ing it into the space between the closed cover and the surface of the liquid, and means for changing the position of the container about a horizontal axis while in said space to ermit a uniform and unagitated drainage oi liquid.

2. An ap aratus for impregnatinig paper tubes or ot er orous articles comprising a tank, a remova le cover for closing the top of the tank provided with slots, a porous container for the articles to be treated, a vertical movable support for the container, connections between the support and container arranged to pass through the slots in the hover 4. An apparatus for impregnating paper container havin closing the tank after the introduction of i the container. I

5. An apparatus for impregnating paper tubes or other porous articles comprising a container for the articles to be treated, sockets on the ends of the container, blocks fitting the sockets, sprocket wheels secured to the blocks,

a horizontal shaft provided with sprocket wheels, belt chains passing over the sprocket Wheels and suspending the container, and

means for raising and lowering the shaft.

6. An apparatus for impregnating paper tubes or other porous articles comprising a areticulated top and bottom,-sprocket w eels secured to the ends of the container, belt chains passing over the sprocket Wheels and suspending the container, means for raising and lowering the chains, and means for actuating the chains to invert the container.

7. An apparatus for impregnating paper tubes or other porous articles comprising a tank, a cover for closing the top of the tank, a porous container for the articles to be treated, means for immersing the container in an impregnating liquid in the bottom of the tank and for lifting it into the space betweenthe closed cover and the surface of the liquid, and means for changing the posi-' while retaining them in said closed space and permitting them to drain in the changed position whereby a uniform and unagitated drainage of liquid is permitted.

NORMAN MARSHALL. 

